"frothing" in the verb sense
1. foam, froth, fizz, effervesce, sparkle, form bubbles
become bubbly or frothy or foaming
"The boiling soup was frothing"
"The river was foaming"
"sparkling water"
2. froth, spume, suds
make froth or foam and become bubbly
"The river foamed"
3. froth
exude or expel foam
"the angry man was frothing at the mouth"
"frothing" in the adjective sense
1. foaming, foamy, frothing
producing or covered with lathery sweat or saliva from exhaustion or disease
"the rabid animal's frothing mouth"
Source: WordNet® (An amazing lexical database of English)
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